Differential myometer

• US 5,911,693 A
• Filed: 09/29/1997
• Issued: 06/15/1999
• Est. Priority Date: 01/04/1995
• Status: Expired due to Fees

• Current Assignee: Neuromotion, Inc.
• Original Assignee: University of Alberta
• Inventors: Bennett, David, Prochazka, Arthur
• Primary Examiner(s): Hindenburg, Max
• Assistant Examiner(s): MARMOR II, CHARLES ALAN
• Application Number:
  US08/875,385
• Time in Patent Office: 624 Days
• Field of Search: 600/587, 600/595, 73/379.01
• US Class Current: 600/587
• CPC Class Codes: A61B 5/225 of the fingers, e.g. by monitoring hand-grip force

Abstract

A myometer is disclosed. The myometer, especially in the form of a force-sensing mitt or cuff, may be used to grasp a limb or other object, and particularly used by a clinician in evaluating the medical state of a limb. The myometer has pressure measuring means at at least two locations to provide quantitative information on pressure applied to the limb or object. Preferably, the pressure is measured by at least two pressure transducers, with especially the difference in pressure being measured. The myometer is particularly in a form capable of fitting on a person'"'"'s hand, with pressure sensitive pads being located at positions corresponding to thumb and to fingers of the hand.

Claims

1. A force-sensing mitt or cuff which may be used to grasp a limb or other object, said mitt or cuff comprising pressure sensitive pads at at least two separate locations on said mitt or cuff to provide quantitative information on the difference in pressure applied to said limb or object between said locations, said mitt being in a form capable of fitting on a person'"'"'s hand, with the pressure sensitive pads being located at positions corresponding to a thumb and to four fingers of the hand, said pressure sensitive pads having thin stiff sheets thereon to facilitate distribution of pressure over said pressure sensitive pads.

2. The mitt or cuff of claim 1 in which at least two pressure-sensitive pads are located within said mitt or cuff and deployed in such a way as to additionally separately sense the pressure applied to said limb or object at said two separate locations.

3. The mitt or cuff of claim 1 in which the pressure sensitive pads register zero pressure when equal pressure is applied at two opposed locations.

4. The mitt or cuff of claim 3 in which parameters measured are displayed on an electronic display built into said mitt or cuff.

5. The mitt or cuff of claim 4 in which the pressure sensitive pads comprise two pressure transducers.

6. The mitt or cuff or claim 1 in which a displacement transducer is used in conjunction with pressure transducers, to allow parameters of mechanical impedance to be computed.

7. The mitt or cuff of claim 1 in which at least one accelerometer is used in conjunction with pressure transducers, to allow parameters of mechanical impedance to be computed, said at least one accelerometer being within or attached to said mitt or cuff.

8. The mitt or cuff of claim 7 in which there is one accelerometer.

9. The mitt or cuff of claim 7 in which there are two accelerometers.

10. The mitt or cuff of claim 1 in which the pressure sensitive pads comprise at least two pressure transducers.

11. A medical device in the form of a garment having a first pressure transducer and a second pressure transducer, said first transducer and said second transducer being located on separate portions of the garment and being capable of contacting substantially opposed sides of an object or limb, each of said pressure transducers being connected to recording means capable of recording the difference in pressure measures by the pressure transducers, said first and second pressure transducers having thin stiff sheets thereon to facilitate distribution of pressure over the respective transducer.

12. The device of claim 11 in the form of a mitt.

13. The device of claim 11 in the form of a cuff.